Hojin Lee - Profile on Academia.edu (original) (raw)
Papers by Hojin Lee
Microwave and Optical Technology Letters, 2010
This article describes a dual-band gap-filler microstrip antenna with nearly equal gain and simil... more This article describes a dual-band gap-filler microstrip antenna with nearly equal gain and similar radiation patterns in the 2.4-GHz and 5.8-GHz ISM satellite Internet service bands. The proposed antenna has two Y-shaped slots on the microstrip patch and is fabricated on an RO4003 substrate with a dielectric constant of 3.38 and a thickness of 0.508 mm. The dimensions of the antenna are 50 mm  47.5 mm  6.5 mm, and it is fed by a coaxial cable. The measured bandwidths of the antenna are 2.376-2.492 GHz and 5.425-6.055 GHz for a voltage standing wave ratio of less than 2. At 2.42 GHz, the antenna has a broadside radiation pattern with a half-power beamwidth (HPBW) of 70 in the x-z plane and 80 in the y-z plane. At 5.75 GHz, it has a HPBW of 65 in the x-z plane and 75 in the y-z plane. The measured gain is 8.37 dB in the 2.4-GHz ISM band and 8.38 dB in the 5.8 GHz ISM band. V
VTC Spring 2008 - IEEE Vehicular Technology Conference, 2008
ETRI Journal, 2010
the area of radar and optical instrumentation. In 2000, he joined ETRI Daejeon, Korea, where he i... more the area of radar and optical instrumentation. In 2000, he joined ETRI Daejeon, Korea, where he is currently a Special Fellow and senior member of engineering staff with the Broadcasting and Telecommunications Convergence Research Laboratory. His research interests include satellite communication systems, IMT systems, and high altitude platform stations.
System for Controlling Temperature of Antenna Module
Keynote Address : A New Roadmap for Satellite Development in Korea (衛星通信)
電子情報通信学会技術研究報告 Ieice Technical Report 信学技報, Oct 24, 2013
Frequency selective surface structure for multi frequency bands
Mobile Broadband Satellite Access System for Ka/Ku band Satellite Communications(System Engineering-I)
電子情報通信学会技術研究報告 Sat 衛星通信, Oct 16, 2003
Power Controlled Adaptive Modulation and Coding Scheme in Satellite Communications System
Development of satellite and terrestrial convergence technology for internet services on high-speed trains: service scenarios (衛星通信)
電子情報通信学会技術研究報告 Sat 衛星通信, Oct 25, 2007
TCP Performance Enhancing Mechanism on Vertical Handoff of Satellite based Wireless Internet in High-Speed Train
電子情報通信学会技術研究報告 Sat 衛星通信, Oct 22, 2009
Performance Verifications of the KOMPSAT-1 MCE in the aspects of orbit and attitude operations
電子情報通信学会技術研究報告 Sat 衛星通信, Dec 1, 2000
System for estimating traffic rate of calls in wireless personal communication environment and method for the same
Random access channal access apparatus for mobile satellite communication system and method therefor
Apparatus and method for compensating forward link rain attenuation based on adaptive transmission scheme for interactive satellite transmission system
Apparatus and method for traffic performance improvement and traffic security in interactive satellite communication system
Apparatus and method for resource allocation in MF-TDMA broadband satellite system
Iterative decoding method for block turbo codes of greater than three dimensions
Apparatus for Determining Diameter of Parabolic Antenna and Method Therefor
An enhanced digital timing synchronization technique for DVB-S system
IEEE 60th Vehicular Technology Conference, 2004. VTC2004-Fall. 2004
ABSTRACT
Microwave and Optical Technology Letters, 2010
This article describes a dual-band gap-filler microstrip antenna with nearly equal gain and simil... more This article describes a dual-band gap-filler microstrip antenna with nearly equal gain and similar radiation patterns in the 2.4-GHz and 5.8-GHz ISM satellite Internet service bands. The proposed antenna has two Y-shaped slots on the microstrip patch and is fabricated on an RO4003 substrate with a dielectric constant of 3.38 and a thickness of 0.508 mm. The dimensions of the antenna are 50 mm  47.5 mm  6.5 mm, and it is fed by a coaxial cable. The measured bandwidths of the antenna are 2.376-2.492 GHz and 5.425-6.055 GHz for a voltage standing wave ratio of less than 2. At 2.42 GHz, the antenna has a broadside radiation pattern with a half-power beamwidth (HPBW) of 70 in the x-z plane and 80 in the y-z plane. At 5.75 GHz, it has a HPBW of 65 in the x-z plane and 75 in the y-z plane. The measured gain is 8.37 dB in the 2.4-GHz ISM band and 8.38 dB in the 5.8 GHz ISM band. V
VTC Spring 2008 - IEEE Vehicular Technology Conference, 2008
ETRI Journal, 2010
the area of radar and optical instrumentation. In 2000, he joined ETRI Daejeon, Korea, where he i... more the area of radar and optical instrumentation. In 2000, he joined ETRI Daejeon, Korea, where he is currently a Special Fellow and senior member of engineering staff with the Broadcasting and Telecommunications Convergence Research Laboratory. His research interests include satellite communication systems, IMT systems, and high altitude platform stations.
System for Controlling Temperature of Antenna Module
Keynote Address : A New Roadmap for Satellite Development in Korea (衛星通信)
電子情報通信学会技術研究報告 Ieice Technical Report 信学技報, Oct 24, 2013
Frequency selective surface structure for multi frequency bands
Mobile Broadband Satellite Access System for Ka/Ku band Satellite Communications(System Engineering-I)
電子情報通信学会技術研究報告 Sat 衛星通信, Oct 16, 2003
Power Controlled Adaptive Modulation and Coding Scheme in Satellite Communications System
Development of satellite and terrestrial convergence technology for internet services on high-speed trains: service scenarios (衛星通信)
電子情報通信学会技術研究報告 Sat 衛星通信, Oct 25, 2007
TCP Performance Enhancing Mechanism on Vertical Handoff of Satellite based Wireless Internet in High-Speed Train
電子情報通信学会技術研究報告 Sat 衛星通信, Oct 22, 2009
Performance Verifications of the KOMPSAT-1 MCE in the aspects of orbit and attitude operations
電子情報通信学会技術研究報告 Sat 衛星通信, Dec 1, 2000
System for estimating traffic rate of calls in wireless personal communication environment and method for the same
Random access channal access apparatus for mobile satellite communication system and method therefor
Apparatus and method for compensating forward link rain attenuation based on adaptive transmission scheme for interactive satellite transmission system
Apparatus and method for traffic performance improvement and traffic security in interactive satellite communication system
Apparatus and method for resource allocation in MF-TDMA broadband satellite system
Iterative decoding method for block turbo codes of greater than three dimensions
Apparatus for Determining Diameter of Parabolic Antenna and Method Therefor
An enhanced digital timing synchronization technique for DVB-S system
IEEE 60th Vehicular Technology Conference, 2004. VTC2004-Fall. 2004
ABSTRACT